Effects of human activities on hydrological drought patterns in the Yangtze River Basin, China

Donglai Jiao (), Dajiang Wang and Haiyang Lv
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Donglai Jiao: Nanjing University of Posts and Telecommunications
Dajiang Wang: Nanjing University of Posts and Telecommunications
Haiyang Lv: Nanjing University of Posts and Telecommunications

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2020, vol. 104, issue 1, No 46, 1124 pages

Abstract: Abstract As an extremely important region for the socioeconomic development of China, the Yangtze River Basin (YRB) is vulnerable to climate change and natural disasters. In recent decades, hydrological droughts have jeopardized regional water supply, local ecosystem services, and economic development in this region. This study simulates the characteristics of hydrological droughts in the YRB using the PCR-GLOBWB v2.0 model and the variable threshold method. High-spatial-resolution (about 10 km) PCR-GLOBWB v2.0 simulations considering the effects of human activities closely match the observed hydrological data for the YRB. Thus, the results indicate that human activities directly influence the tempo-spatial characteristics of hydrological droughts in the YRB. Reservoir operation decreases the multi-year monthly discharge but increases low flow in the severe drought years in the middle and lower subbasins of the YRB. These findings highlight the uneven effects of human activities on hydrological droughts in the YRB. In conclusion, anthropogenic activities must be considered when developing future mitigation and adaptation strategies for the YRB.

Keywords: Hydrological drought; PCR-GLOBWB v2.0 model; Human activities; Yangtze River Basin; Three Gorges Dam (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s11069-020-04206-2

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